The earth’s crust has only _____ carbon in the form of minerals (like carbonates, hydrogen carbonates, coal and petroleum).
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A.
0.02
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B.
0.002
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C.
0.2
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D.
0.0002
Correct Answer:
D. 0.0002
Explanation:
The Earth's crust contains approximately 0.02% carbon. This element is found in several mineral forms, including carbonates, hydrogen carbonates, coal, and petroleum. Although carbon is essential for life and serves as a primary component of fossil fuels, it makes up only a tiny fraction of the crust's total mass compared to more abundant elements like oxygen and silicon.
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